Burns contributed a song to Johnson's Scots Musical Museum, #481, which starts:

The bonniest lad that e're I saw,
Bonnie laddie, highland laddie,
Wore a plaid and was fu' braw,
Bonnie Highland laddie.

but this was compiled from some Jacobite verses printed in "Collection of Loyal Songs, Poems,&c. 1750".

The Highland Lad and Lawland Lassie
Tune: If thou'lt play me fair play

and begins:

The cannons roar and trumpets sound,
Bonnie Lassie, lawland lassie,
An' a' the hills wi' Charles resound.
Bonnie Lawland Lassie.